What is the YD(J.Z) Series Power Frequency Withstand Voltage Test System?

The YD(J.Z) Series Power Frequency Withstand Voltage Test System is a critical industrial testing apparatus designed for evaluating the insulation integrity of electrical equipment, insulation materials, and electronic components. Widely adopted in power plants, power distribution networks, and research institutions, this system subjects test objects to specified high-voltage conditions to identify insulation defects and assess their ability to withstand overvoltage stresses. Below, we analyze its key features and provide a technical comparison across its diverse model range.

Core Features

1.Robust Construction: Utilizes premium insulation materials and advanced manufacturing techniques to ensure reliability and long-term stability.

2.Low Noise & Partial Discharge: Engineered to minimize audible corona discharge (<30 dB) and partial discharge levels (<5 pC), ensuring precision in sensitive environments.

3.Compact Design: Modern insulation composites reduce weight by 15–20% compared to conventional systems, enhancing portability without compromising performance.

Technical Specifications & Comparative Analysis

The YD(J.Z) series offers 28 standardized models, categorized by output voltage (50–300 kV) and capacity (1.5–300 kVA). Key differentiating parameters include:

1. Low-Voltage Models (50–150 kV)

Application: Ideal for low-to-medium voltage equipment (e.g., transformers, cables ≤35 kV).

Key Trend: Higher HV voltage models (≥100 kV) adopt 380 V input and 1000:1 transformation ratios to optimize efficiency.

2. High-Voltage Models (200–300 kV)

Application: Suited for ultra-high-voltage (UHV) equipment testing, such as GIS systems and cross-linked polyethylene cables.

Design Focus: LV input shifts to 400 V for reduced current losses, while HV currents scale linearly with capacity (e.g., 1500 mA at 300 kVA).

3. Thermal Performance

All models maintain a stable temperature rise of ≤10°C after 30 minutes of continuous operation, ensuring thermal resilience under repetitive testing cycles.

Selection Guidelines

1.HV Voltage: Match the test voltage to the equipment’s rated insulation level (e.g., 150 kV for 110 kV-class switchgear).

2. Capacity: Calculate required kVA using:

For instance, a 50 kV test with 100 mA leakage demands ≥5 kVA (Model 5/50).

3.Input Voltage Compatibility: 200 V models suit labs with single-phase supply; 380/400 V variants align with industrial three-phase grids.

Advantages Over Conventional Systems

1.Precision: ±1.5% voltage regulation accuracy versus ±3% in legacy systems.

2.Portability: 40 kVA/50 kV units weigh 85 kg, 35% lighter than competitors.

3.Scalability: Modular design allows cascade connections for outputs up to 600 kV.

The YD(J.Z) series combines precision engineering with operational flexibility, addressing diverse high-voltage testing needs. Its tiered model range ensures cost-effective solutions for applications ranging from small-scale component validation to large-grid infrastructure certification.

GDZX is a manufacturer of power testing equipment, offering a wide range of product categories with comprehensive models and providing professional technical support. Contact: +86-17396104357.Website: https://www.highvoltage-testequipment.com/